Okay, so this is a situation that’s really weighing on me, and I’m genuinely conflicted. I (28F) have a younger sister (24F), and she’s in a long-term, committed relationship with her boyfriend (26M). They’ve been together for over three years now, and they’re both amazing people—kind, hardworking, and responsible. They both have steady jobs, are financially stable, and are really great together. Honestly, I’ve always thought they’d make an awesome family someday.

A few weeks ago, my sister came to me with the news that she’s pregnant. Both she and her boyfriend were ecstatic—they’d talked about having kids in the future, and now that it was happening, they were beyond excited. They were already discussing baby names, looking at nurseries, and planning for their future as parents. I could tell they were both 100% ready for this, and I thought it was beautiful that they were so happy about starting a family.

Here’s where I messed up: despite all of that, I still had this overwhelming feeling of unease. I love my sister so much, and I’ve always tried to be protective of her. I started getting these thoughts that maybe they weren’t completely ready. I’ve always been a bit of a worrywart, and I started questioning if they fully understood the weight of what becoming parents would mean. Despite their excitement, I feared that they were underestimating the long-term commitment it takes to raise a child—emotionally, financially, and mentally.

I tried to have a few conversations with my sister about her decision. I didn’t want to come off as judgmental, but I expressed my concerns about the challenges of parenthood and how much it could change their lives. She and her boyfriend reassured me every time that they were fully prepared for this. They were happy, in love, and ready to take on the responsibilities of being parents. But no matter how much they reassured me, I couldn’t shake the feeling that I needed to do something to stop the pregnancy.

And here’s where I completely messed up: I had some Plan B pills in my medicine cabinet (from a different situation) and, in a moment of panic, I decided to secretly put one in my sister’s tea when she came over to visit. I thought that if she wasn’t pregnant anymore, she might have time to think things over more carefully. In my mind, I thought I was helping her, that maybe she’d be grateful later for “giving her more time” to really process the decision. I felt like I was doing what was best for her, even if she didn’t realize it in the moment.

Well, a few days later, my sister found out she was no longer pregnant, and she was absolutely furious with me. She’s devastated and feels completely betrayed. She told me that I had no right to make that decision for her, especially when she and her boyfriend were both excited to have the baby and were fully prepared for parenthood. She’s really hurt, and our relationship is in a really bad place right now.

I feel incredibly guilty, and I know I messed up by taking away her choice in such a drastic way. I genuinely thought I was doing the right thing, but I see now that I violated her trust and made a decision that wasn’t mine to make. I’m starting to realize that no matter how much I worried about their readiness, it wasn’t my place to interfere in that way.

So, AITA for secretly giving my sister Plan B to terminate her pregnancy, even though she and her boyfriend were excited to have a child and were both ready to be parents?

TL;DR: My sister and her boyfriend were excited to have a baby and were ready for parenthood. I secretly gave my sister Plan B because I was worried they weren’t truly ready. She’s furious with me now, and I’m questioning if I overstepped. AITA?